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Subject: lplot and quickplot (Part 1 of 2) From: Duane Hesser <talcott!seismo!hplsla!tikal!sysad> Newsgroups: mod.sources Approved: jpn@panda.UUCP Mod.sources: Volume 4, Issue 93 Submitted by: Duane Hesser <seismo!hplsla!tikal!sysad> This source distribution contains source for "lplot" and "quickplot"; filters for P300 and ascii terminals primarily for BSD sites. The latter makes a printable ascii approximation of a standard Unix plot stream on any ascii device. "Lplot" makes an output stream which will use the plot mode of a Printronix P300 or equivalent printer. The README describes the programs in more detail, along with a few portability issues. Also included are some simple "C" programs to generate arcs, lines, etc.; useful for testing lplot and quickplot. -----cut here-----------cut here-----------cut here------- #! /bin/sh # This is a shell archive, meaning: # 1. Remove everything above the #! /bin/sh line. # 2. Save the resulting text in a file. # 3. Execute the file with /bin/sh (not csh) to create the files: # README # lplot.p # quickplot.p # This archive created: Fri May 2 18:20:50 1986 export PATH; PATH=/bin:$PATH echo shar: extracting "'README'" '(6240 characters)' if test -f 'README' then echo shar: will not over-write existing file "'README'" else cat << \SHAR_EOF > 'README' /* * It is the intent of the author that this software may be * distributed and used freely, without restriction. If you * make improvements or enhancements, I would appreciate a * copy. * The author makes no warranty, express or implied, as to * the functioning or suitability of the software for any * purpose, and the fact of distribution implies no such * warranty. The author assumes no responsibility for * himself or others in connection with this software of any * use of it (i.e., you may use it freely, but don't blame * me if something goes wrong). * Duane H. Hesser, Teltone Corporation * ....uw-beaver!tikal!sysad * ....uw-beaver!tikal!dhh */ "lplot" is a plot(3) filter for Printronix P300 (or equivalent) printers. "quickplot" is a plot(3) filter for any ascii terminal. "Quickplot" can be used to display simple low-resolution plots, but is probably more useful for previewing plot streams before plotting on a real plottting device. "lplot" accepts the arguments which the 4.2BSD printer spooler sends to plot filters (hostname, user, and pixel sizes), and thus may be used in /etc/printcap on 4.2BSD systems as the "g" filter for a printer. (These arguments are optional.) Please see the supplied manual pages for further information about behavior and available options. These programs have been compiled sucessfully under BSD 4.2 on a Pyramid, and BSD 4.2 and 4.1 on Vax 750's. There should be little to prevent their compilation on any Unix system which has the plot(3) library. (ummm... you will also need some form of bzero() and bcopy()). CAVEATS: "quickplot" needs the termcap library; it would not be difficult to do without it. "lplot" requires about 104kbytes for the output array (no raster file is used), so machines with limited data space will need to restrict the plotting area (cut down the array size), or modify the point() and output() routines to use some sort of virtual array with disk buffering. BEWARE your line printer driver. Some drivers like to do a bit of processing on the data sent to them, assuming that you want backspaces and carriage returns handled specially, for example. The driver must pass lplot output untainted by its own pre-conceptions. "lplot" assumes that the paper in the printer is positioned at line 1, rather than at the fold, so that printing (or plotting) begins at the first line on the page. This means that it assumes 780 dots vertically, rather than 792. If this doesn't suit your situation (and you find top-of-form creeping), change YDOTS in "defs.h". Horizontal dot density is 60 dots per inch, vertical dot density is 72 dots per inch, and array space is provided to permit plotting on a full page of 132 column by 11 inch printer paper. Although the space() routine maps its arguments into an 8 inch plotting area in the lower left corner of the page, plotting is permitted outside that range. (Note: "quickplot" truncates data outside the mapped area, which is taken to be the full terminal screen.) MAKEFILES: There are 3 makefiles: one for "lplot" one for "quickplot" and one to control the other two. The latter is "Makefile". If you type "make" by itself, the following list of targets will be printed: Use: make all to update lplot and quickplot make new to make both from scratch make clean to remove .o files make bclean to remove binaries and .o files make lplot to make only lplot make quickplot to make only quickplot make install to update and install both make install_l to update and install lplot make install_q to update and install quickplot You should edit "Makefile" to set BIN (the directory where the binaries are to be installed), and MAN (where the manual pages are to be copied). As delivered, BIN=/usr/public/bin, MAN=/usr/man/manp. You should also check the DEFINES. Then type "make new" to make both binaries (or "make install" if your want to do the whole thing in one swell foop). The DEFINES should be changed in Makefile.lplot and Makefile.quickplot as appropriate. "make install" will install the binaries, and make a link to "lplot" called "rlplot". "rlplot" activates the 'rotate' option, which causes the plot to be rotated 90 degress ccw. We use this in /etc/printcap for one of our printers in which we use 8 1/2 x 11 paper, with appropriate pixel sizes, to cause the long dimension of the paper to appear "horizontal" to the plot. If you don't have the 4.2 spooler, don't use narrow paper, or just plain don't need rotated plots, you may wish to delete this from the makefile. Note: the rather strange makefile setup is intended to keep track of which binary is being created. Loading "lplot" with object files created with QUICKPLOT defined is ineffective. Use separate directories if you prefer. DEFINES: define BIGENDIAN if you are compiling for a machine with mad-hatter byte-order (3,2,1,0,7,6,5,4...) like Pyramids and 68000's. Leave it out for Vaxes. define DEBUG to compile in some debugging code. This is set in the delivered makefiles, and compiles in a '-d' flag which permits 3 levels of debugging output (controlled by the 1,2,4 bits in the single- digit following argument). '-d 1' outputs the decoded and scaled plot stream commands, and can be useful for debugging plot streams; the remaining bits are useful only for program debug. define QUICKPLOT to compile "quickplot"; leave it out to compile "lplot". These are set up already in the appropriate makefiles. All other defines are in "defs.h", and should not need to be changed unless you have a printer with different dot density or perhaps a different graphics code, etc. ONE LAST THING The sources in this distribution are created with 4 space tabstops. They contain comment-commands for later versions of "vi" to set tabstops appropriately; if this doesn't work for you, set tabstops manually to 4, use "expand -4", or run them thru a sed script or "indent". SHAR_EOF if test 6240 -ne "`wc -c < 'README'`" then echo shar: error transmitting "'README'" '(should have been 6240 characters)' fi fi echo shar: extracting "'lplot.p'" '(4313 characters)' if test -f 'lplot.p' then echo shar: will not over-write existing file "'lplot.p'" else cat << \SHAR_EOF > 'lplot.p' .TH LPLOT PUBLIC .UC 4 .SH NAME lplot \- plot filter for Printronix P300 style line printers .SH SYNOPSIS .B lplot [ option ] ... [ file ] [ option ] ... [ file ] ... .SH DESCRIPTION .I Lplot accepts a plot stream as produced by the plot(3) functions and generates on the standard output a byte stream which will produce the plot on a Printronix P300 style line printer using the printer's "graphics" mode. No raster file is generated; plot data is sent directly to standard output. .PP By default, plots are scaled to an 8 inch square plotting area, to be consistent in scale with other plot filters. Arguments are provided to change scaling in one or both directions, change the area into which the space() (see plot(3)) call maps user data, change the position of the plot on the page, or rotate the plot 90 degrees counter clockwise (useful primarily for printers loaded with 8 1/2 x 11 inch paper). .PP .I Lplot will accept the arguments passed by the Berkeley 4.2BSD printer spooler for accounting; thus it may be used in /etc/printcap as the "g" filter on such systems. No accounting is performed, of course, if these arguments are not given Arguments for pixel width and height are also recognized and used (within compiled-in limits). .PP If called as .I rlplot, the plot will be rotated 90 degrees counter-clockwise (-r flag) and the origin will be located at the lower right of the page. .PP If no file arguments are given, .I lplot reads from the standard input. If file arguments are given, an argument consisting of the single character '-' will be replaced by the standard input. .PP The P300 printer has a resolution of 60 dots per inch horizontally, 72 dots per inch vertically. The default 8 inch plot area is thus 480 dots x 576 dots. The maximum plot area is 780 dots x 792 dots (12 dots are unavailable when the print head is positioned at the first printable line). .SH OPTIONS .IP "-H \fIx\fP" 15n limit the plot to \fIx\fP dots horizontally (maximum 792). .IP "-W \fIy\fP" 15n limit the plot to \fIy\fP dots vertically (maximum 780). .IP "-s[xy] \fIfactor\fP" 15n set an overall scale factor. The plot is magnified by the scale factor (but may be truncated if the resulting plot area is larger than the page). If \fIx\fP or \fIy\fP is given, the scale factor will be applied in the indicated direction only. .IP "-X \fInum\fP" 15n move the plot right \fInum\fP inches (negative \fInum\fP moves left). .IP "-Y \fInum\fP" 15n move the plot up \fInum\fP inches (negative \fInum\fP moves down). \fIchar\fP .IP "-e" 15n force an erase command between plot files .IP "-N" 15n suppress erase commands .IP "-r" 15n rotate the plot 90 degrees counter-clockwise .IP "-d num" 15n set debugging level to .I num (debugging is conditionally compiled; this may have no effect). The most useful setting is '1', which causes .I quickplot to print the plot(3) commands as it interprets them, with arguments scaled to final values. The plot is still generated. .IP "-x\fInum\fP" 15n limit the plot to \fInum\fP dots horizontally (maximum 792). Included for compatibility with the 4.2BSD line printer spooler. .IP "-y\fInum\fP" 15n limit the plot to \fInum\fP dots vertically (maximum 780). Included for compatibility with the 4.2BSD line printer spooler. .SH NOTE BENE .PP It is permissible to plot outside the 8 inch square, but data outside the page will be truncated (plotted at the maximum plot point). .SH DIAGNOSTICS \'Bad input data: cmd %o' if an unrecognized plot command is received. May happen if labels contain newlines, or plot stream files are corrupted. Scanning will continue. Premature EOF while reading data for a command will generate an appropriate error and the program will quit. .SH "SEE ALSO" quickplot(1) .SH AUTHOR Duane Hesser (sysad@teltone) .SH BUGS Labels are plotted by internal table on an 8 dot wide x 9 dot high grid (including 2 descenders). The resulting labels will generally scale somewhat larger than labels generated by other plot filters. Fonts are not available. .PP Resolution is poor. .PP .I Lplot attempts to send minimum data to the printer, by sending bytes only up to the last byte in each row containing data; this accomplishes little, however, if the plot is boxed. (Plotting is slow.) .PP There is no way to rotate characters for vertical labeling. SHAR_EOF if test 4313 -ne "`wc -c < 'lplot.p'`" then echo shar: error transmitting "'lplot.p'" '(should have been 4313 characters)' fi fi echo shar: extracting "'quickplot.p'" '(3842 characters)' if test -f 'quickplot.p' then echo shar: will not over-write existing file "'quickplot.p'" else cat << \SHAR_EOF > 'quickplot.p' .TH QUICKPLOT PUBLIC .UC 4 .SH NAME quickplot \- make a printable ascii approximation of a plot stream .SH SYNOPSIS .B quickplot [ option ] ... [ file ] [ option ] ... [ file ] ... .SH DESCRIPTION .I Quickplot accepts a plot stream as produced by the plot(3) functions and generates on the standard output a byte stream which is a printable ascii approximation of the plot, suitable for viewing on an ascii terminal or printing device. Quickplot is useful for previewing plots on your terminal before sending to a plotting device. .PP .I Quickplot consults the termcap database for your terminal type (as given by the TERM environment variable) and attempts to size the plot to fill your screen. The terminal type may be overridden by specifying a terminal type on the command line or by specifying the rows and columns desired (see OPTIONS below). .PP If no file arguments are given, .I quickplot reads from the standard input. If file arguments are given, an argument consisting of the single character '-' will be replaced by the standard input. .SH OPTIONS .IP "-T \fIterm\fP" 15n make a plot suitable for terminal given by \fIterm\fP. .IP "-H \fIrows\fP" 15n map the plot into \fIrows\fP rows, instead of the rows given by termcap. .IP "-W \fIcols\fP" 15n map the plot into \fIcols\fP cols, instead of the cols given by termcap. .IP "-s[xy] \fIfactor\fP" 15n set an overall scale factor. The plot is magnified by the scale factor (but may be truncated if the screen is too small). If \fIx\fP or \fIy\fP is given, the scale factor will be applied in the indicated direction only. .IP "-X \fIcols\fP" 15n move the plot right \fIcols\fP cols (negative \fIcols\fP moves left). .IP "-Y \fIrows\fP" 15n move the plot up \fIrows\fP rows (negative \fIrows\fP moves down). .IP "-c \fIchar\fP" 15n The plotting character (default upper case 'X') will be replaced by \fIchar\fP .IP "-e" 15n force an erase command between plot files .IP "-N" 15n suppress erase commands .IP "-r" 15n rotate the plot 90 degrees counter-clockwise .IP "-d num" 15n set debugging level to .I num (debugging is conditionally compiled; this may have no effect). The most useful setting is '1', which causes .I quickplot to print the plot(3) commands as it interprets them, with arguments scaled to final values. The plot is still generated. .SH NOTE BENE .I Quickplot is unlike most plot filters in that it does not map your plot space specifically into a square plotting area; instead, it attempts to obtain maximum resolution by mapping the plot into the full screen. Since most terminals have many more columns than rows, most plots will be "distorted" (a square box will plot as a rectangle). .PP Data outside the plot area will be truncated (plotted at the maximum plot point) and the normal plot character will be replaced by the character '@' (which does not change if you select '@' as the plot character). .PP IF MORE THAN ONE PLOT FILE IS GIVEN AS ARGUMENT, .I quickplot will pause .B SILENTLY between plots (unless standard output and standard error have been re-directed) and wait for a single carriage return before proceeding to the next plot. .SH DIAGNOSTICS \'Bad input data: cmd %o' if an unrecognized plot command is received. May happen if labels contain newlines, or plot stream files are corrupted. Scanning will continue. Premature EOF while reading data for a command will generate an appropriate error and the program will quit. .SH "SEE ALSO" lplot(1) .SH AUTHOR Duane Hesser (sysad@teltone) .SH BUGS Resolution is understandably poor. Plots are squashed vertically. .PP .I Quickplot attempts to identify dotted, dashed, etc. lines by plotting alternate characters in a line as a small integer digit representing the line type. For short line segments, this doesn't work very well, since there is no memory of the previous line segment. SHAR_EOF if test 3842 -ne "`wc -c < 'quickplot.p'`" then echo shar: error transmitting "'quickplot.p'" '(should have been 3842 characters)' fi fi exit 0 # End of shell archive